Comparison measurements

Our services as provider of proficiency tests


Due to its long-term experience in the field of metrology, ZMK & ANALYTIK GmbH was also able to realize an accreditation for comparison measurements according to ISO / IEC 17043.

We offer comparison measurements for all measuring quantities for which we are also accredited as a calibration laboratory (ISO / IEC 17025). With this the technical competence is ensured.

The ZMK & ANALYTIK GmbH takes on the tasks of the pilot laboratory, these are:

  • Planning and organization
  • Selection and provision of the transfer standards
  • Preparation and agreement of the working description with the participants
  • Implementation and control measurements
  • Evaluation and reporting using statistical methods.


Why comparison measurements are needed?


Comparison measurements on the area of metrology are:

  • a measure of validation of calibration procedures
  • a need to maintain the own competence
  • an important criterion for auditors in assessing this competence


Multilateral comparison are mainly agreed in the technical committees of the DKD. This ensures the inclusion of the National Metrology Institute PTB and, where possible, the connection to “Supplementary Key Comparisons” of RMO EURAMET.

Our complete range of services for comparison measurements can be found in the annex to our current accreditation certificate (D-EP-15186-01-00).


Example for implementation of a comparison measurement as a ring with several participants

For the comparison measurements we provide our own calibration items!


Requests for comparison measurements / key comparisons should be directed to us, see contacts.